package com.lyy.lottery.common.util;

import ch.qos.logback.core.util.TimeUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;

import java.util.Collection;
import java.util.concurrent.TimeUnit;

@Configuration
@Slf4j
public class RedisUtil {

    /**
     * RedisTemplate：先将被存储的数据换成字节数组（不可读），再存储进redis中，读取时按照字节数组读取
     * StringRedisTemplate：直接存放String（可读）
     * 项目背景：String,String
     */
    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    //设置值
    public boolean set(String key,String value){
        try{
            stringRedisTemplate.opsForValue().set(key,value);
            return true;
        }catch (Exception e){
            log.error("RedisUtil error, set({},{})",key,value,e);
            return false;
        }
    }

    //设置值（带有过期时间）
    public boolean set(String key,String value,Long time){
        try{
            stringRedisTemplate.opsForValue().set(key,value, time, TimeUnit.SECONDS);
            return true;
        }catch (Exception e){
            log.error("RedisUtil error, set({},{})",key,value,e);
            return false;
        }
    }

    //获取值
    public String get(String key){
        try {
            return StringUtils.hasText(key)
                    ? stringRedisTemplate.opsForValue().get(key)
                    :null;
        }catch (Exception e){
            log.error("RedisUtil error,get({})",key,e);
            return null;
        }
    }

    //删除值
    public boolean del(String... key){
        try{
            if (null!=key && key.length>0){
                if (key.length==1){
                    stringRedisTemplate.delete(key[0]);
                }else {
                    stringRedisTemplate.delete(
                            (Collection<String>) CollectionUtils.arrayToList(key)
                    );
                }
            }
            return true;
        }catch (Exception e){
            log.error("RedisUtil error,del({})",key,e);
            return false;
        }
    }

    //判断key是否存在
    public boolean hasKey(String key){
        try {
            return StringUtils.hasText(key)
                    ? stringRedisTemplate.hasKey(key)
                    :false;
        }catch (Exception e){
            log.error("RedisUtil error,hasKey({})",key,e);
            return false;
        }
    }
}

























